<template>
  <div>
    <audio
      @timeupdate="updateProgress"
      controls
      id="audio"
      ref="audioRef"
      style="display: none"
    >
      <source :src="fileurl" type="audio/mpeg" />
      您的浏览器不支持音频播放
    </audio>

    <div class="audio-right">
      <div :class="banClick ? 'ban-click' : ''"></div>
      <i
        :class="
          audioStatus !== 'pause'
            ? 'iconfont icon-bofang'
            : 'iconfont icon-bofangzanting'
        "
        @click="playAudio"
        class="dialogAudioPlay"
      ></i>
      <div class="progress-bar-bg" id="progressBarBg" v-dragto="setAudioIcon">
        <div class="progress-bar" id="progressBar"></div>
      </div>
      <div class="audio-time" style="min-height: 10px">
        <span class="audio-length-current" id="audioCurTime">{{
          audioStart
        }}</span
        >/
        <span class="audio-length-total">{{ duration }}</span>
      </div>
      <div class="volume">
        <i
          class="iconfont pl-1"
          :class="audioIcon"
          @click.stop="audioHuds = !audioHuds"
        >
        </i>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    fileurl: {
      type: String,
    },
    banClick: {
      type: Boolean,
      default: true,
    },
  },
  data() {
    return {
      audioStatus: "play",
      audioStart: "0:00",
      duration: "0:00",
      audioHuds: true,
    };
  },

  directives: {
    dragto: {
      inserted: function (el, binding, vnode) {
        el.addEventListener(
          "click",
          (e) => {
            let wdiv = document.getElementById("progressBarBg").clientWidth;
            let audio = vnode.context.$refs.audioRef;
            // 只有音乐开始播放后才可以调节，已经播放过但暂停了的也可以
            let ratemin = e.offsetX / wdiv;
            let rate = ratemin * 100;
            document.getElementById("progressBar").style.width = rate + "%";
            audio.currentTime = audio.duration * ratemin;
            audio.play();
            binding.value();
          },
          false
        );
      },
    },
  },
  watch: {
    audioHuds(val) {
      this.$refs.audioRef.volume = Number(val);
    },
  },
  computed: {
    audioIcon() {
      return this.audioHuds ? "icon-shengyin" : "icon-jingyin";
    },
  },
  mounted() {
    this.fetch();
  },
  methods: {
    examPlay() {
      const isAutoPlay = true;
      isAutoPlay && this.$refs.audioRef.play();
      this.audioStatus = "pause";
    },
    fetch() {
      var myVid = this.$refs.audioRef;
      myVid.loop = false;
      // 监听音频播放完毕
      myVid.addEventListener(
        "ended",
        () => {
          this.audioStatus = "play"; // 显示播放icon
          document.getElementById("progressBar").style.width = "0%"; // 进度条初始化
        },
        false
      );
      if (myVid != null) {
        myVid.oncanplay = () => {
          this.duration = this.transTime(myVid.duration); // 计算音频时长
        };
      }
    },
    // 播放暂停控制
    playAudio() {
      let recordAudio = this.$refs.audioRef; // 获取audio元素
      if (recordAudio.paused) {
        recordAudio.play();
        this.audioStatus = "pause";
      } else {
        recordAudio.pause();
        this.audioStatus = "play";
      }
    },
    // 更新进度条与当前播放时间
    updateProgress(e) {
      var value = e.target.currentTime / e.target.duration;
      if (document.getElementById("progressBar")) {
        document.getElementById("progressBar").style.width = value * 100 + "%";
        if (e.target.currentTime === e.target.duration) {
          this.audioStatus = "pause";
        }
      } else {
        this.audioStatus = "pause";
      }

      this.audioStart = this.transTime(this.$refs.audioRef.currentTime);
    },
    /**
     * 音频播放时间换算
     * @param {number} value - 音频当前播放时间，单位秒
     */
    transTime(time) {
      var duration = parseInt(time);
      var minute = parseInt(duration / 60);
      var sec = (duration % 60) + "";
      var isM0 = ":";
      if (minute === 0) {
        minute = "00";
      } else if (minute < 10) {
        minute = "0" + minute;
      }
      if (sec.length === 1) {
        sec = "0" + sec;
      }
      return minute + isM0 + sec;
    },
    setAudioIcon() {
      this.audioStatus = "pause";
    },
  },
};
</script>

<style lang="scss"  scoped>
.volume {
  position: relative;
  .volume-progress {
    position: absolute;
    top: -150px;
    width: 32px;
    height: 140px;
    background: #f6f6f6;
    border-radius: 4px;
    padding-top: 10px;
  }
  .volume-bar-bg {
    margin: 0 auto;
    width: 6px;
    height: 120px;
    background: #dcdcdc;
    border-radius: 100px;
    flex: 1;
    position: relative;
    transform: rotate(180deg);
    cursor: pointer;
    .volume-bar {
      width: 6px;
      height: 50%;
      background: #56bf8b;
      border-radius: 100px;
    }
  }
  .checked {
    color: #56bf8b;
  }
}
.audio-right {
  position: relative;
  .ban-click {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
  }
  width: 100%;
  height: 49px;
  line-height: 49px;
  background: #f6f6f6;
  border-radius: 6px;
  display: flex;
  padding: 0 15px;
  .dialogAudioPlay {
    cursor: pointer;
    color: #5c5e66;
    font-size: 20px;
  }
  .progress-bar-bg {
    background-color: #fff;
    flex: 1;
    position: relative;
    height: 10px;
    top: 50%;
    transform: translateY(-50%);
    margin-top: -1px;
    cursor: pointer;
    margin: 0 10px;
  }
  .progress-bar {
    background-color: #56bf8b;
    width: 0%;
    height: 10px;
    border-radius: 5px;
  }

  .audio-time {
    overflow: hidden;
    font-size: 14px;
    .audio-length-total {
      float: right;
    }
    .audio-length-current {
      float: left;
    }
  }
}
</style>

